Question

Give scientific reason :

We are advised to use iodized salt. 

OR 

Why do we use iodized salt?

Answer 1

1. Iodine is needed for synthesis of thyroid hormone. 

2. If there is deficiency of iodine in the diet, it causes enlargement of thyroid gland leading to simple goitre. 

3. This disease is common in hilly areas hence it is also called endemic goitre. 

4. Addition of iodine to table salt prevents this disease. 

5. Therefore we must use iodised salt.